Fondital NIAS BTN 28, Инструкция по установке, эксплуатации и обслуживанию

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CH PROBE (SR) AND DHW PROBE (SS)
TEMPERATURE RELATED RESISTANCE VALUES
T °C 0 1 2 3 4 5 6 7 8 9
0 33242 51534 29925 28409 26980 25633 24361 23161 22028 20958
10 19947 18992 18088 17233 16425 15659 14934 14247 13596 12979
20 12394 11839 11313 10813 10338 9888 9459 9052 8665 8297
30
7947 7614 7297 6995 6707 6433 6171 5922 5685 5458
40 5242 5036 4839 4651 4471 4300 4136 3979 3829 3685
50 3548 3417 3291 3171 3056 2945 2840 2738 2641 2548
60 2459 2373 2291 2212 2136 2063 1994 1926 1862 1800
70 1740 1683 1628 1576 1524 1475 1428 1383 1339 1297
80 1256 1217 1180 1143 1109 1075 1042 1011 981 952
90
923 896 870 845 820 797 774 752 730 710
100 690 671 652 634 617 600 584 568 553 538
Relation between temperature (°C) and nominal resistance (Ohm) of the CH probe SR and the DHW probe SS
E.g.:
25 °C water, nominal resistance is 9888 Oh
90 °C water, nominal resistance is 923 Ohm
3.6 Switching to different gases
NIAS boilers are factory-set according to gas
type requested.
Any later conversion must be performed by
qualified technicians. FONDITAL conversion kit
(supplied with boiler) must be installed. For
conversion and adjustment instruction see below.
Converting boiler from one type of gas to
another:
- remove the main burner;
- remove nozzles - “1” in pic. 24 - of main burner
(13 nozzles on 24 kW models, 15 nozzles on 28
kW models) (see pic.24) and replace them with
those corresponding to the new type of gas.
Check “NOZZLES - PRESSURES” chart for
nozzle size;
- install (LPG 24 kW model conversion only) or
remove (natural gas conversion only) diaphragm
2 at the outlet of the gas valve (see pic. 25);
- re-install main burner;
- position the jumper on the modulation board in
the electrical panel as shown in pic. 26;
- check the pressure value upstream the gas
valve (see “NOZZLES - PRESSURES” chart) and
adjust the pressure of the burner as indicated in
the “BURNER ADJUSTMENT” section;
- check that the burner is functioning properly;
- check that there are no gas leaks.
When the conversion process is completed, fill in
the label supplied with the kit with the information
required and stick it onto the boiler alongside the
rating plate.
NIAS BTN 24
PRESSURES – NOZZLES CHART
Burner pressure (mbar) Type of gas Supply pressure
(mbar)
nozzle Ø (mm) diaphragm Ø
(mm)
Min Max
Natural gas 20 1.20 - 2.9 12.3
Butane 28 0.77 4.9 5.3 23.5
Propane 37 0.77 4.9 7.1 30.3
pic. 24
pic. 25
pic. 26